Cover Image

Gem-diaurated gold(III) complexes: synthesis, structure, aurophilic interaction, and catalytic activity

We present a protocol to synthesize air stable gem-diaurated gold(III) compounds from 1,3-diketones in a single cycloauration step with tetrachloroauric acid. So far related species were only accessible from phosphonium bis(ylide) ligands which hold the two gold atoms in close proximity. Lacking suc...

Full description

Saved in:
Bibliographic Details
Main Authors: Wunsch, Jonas (Author) , Eberle, Lukas (Author) , Mullen, Joseph P. (Author) , Rominger, Frank (Author) , Rudolph, Matthias (Author) , Hashmi, A. Stephen K. (Author)
Format: Article (Journal)
Language:English
Published: February 18, 2022
In: Inorganic chemistry
Year: 2022, Volume: 61, Issue: 8, Pages: 3508-3515
ISSN:1520-510X
DOI:10.1021/acs.inorgchem.1c03479
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acs.inorgchem.1c03479
Get full text
Author Notes:Jonas F. Wunsch, Lukas Eberle, Joseph P. Mullen, Frank Rominger, Matthias Rudolph and A. Stephen K. Hashmi
Description
Summary:We present a protocol to synthesize air stable gem-diaurated gold(III) compounds from 1,3-diketones in a single cycloauration step with tetrachloroauric acid. So far related species were only accessible from phosphonium bis(ylide) ligands which hold the two gold atoms in close proximity. Lacking such a constraint, our compounds show the longest Au-Au distances of all gem-diaurated carbons, ranging from 3.26 to 3.32 Å. Modeling based on results of CCSD(T) calculations shows no stabilization by aurophilic interactions for our gold(III) systems, compared to 9.1 kcal/mol for gold(I) gem-diauration. This demonstrates no aurophilic interactions are needed for the isolation of air stable gem-diaurated gold(III) complexes. We show the new gem-diaurated gold(III) compounds are active in the gold-catalyzed phenol synthesis and highly active in the cycloisomerization of an N-propargylcarboxamide; here, we obtained the so far highest known TON of over 2500 per gold atom with respect to the oxazole formation.
Item Description:Gesehen am 05.07.2022
Physical Description:Online Resource
ISSN:1520-510X
DOI:10.1021/acs.inorgchem.1c03479

Similar Items